Home / 19,659.60-27,140.04-12,949.56

Finding the Fourth Proportional to 19,659.60, 27,140.04 and 12,949.56

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Solution

The fourth proportional to 19,659.60, 27,140.04 and 12,949.56 is: 17,876.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,659.60 : 27,140.04 = 12,949.56 : x
  2. Step 2: Convert to fraction form
    19,659.60/27,140.04 = 12,949.56/x
  3. Step 3: Cross multiply
    19,659.60x = 27,140.04 × 12,949.56
  4. Step 4: Simplify right side
    19,659.60x = 351,451,576.38
  5. Step 5: Solve for x
    x = 351,451,576.38/19,659.60
  6. Step 6: Final answer
    x = 17,876.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.